Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2009MARINER HYBRID, AWDREPAIR AND DIAGNOSISQUICK LOOKUPSDTC INDEX - (HYBRID)INFORMATION & ENTERTAINMENT SYSTEMS DTCSFRONT CONTROLS INTERFACE MODULE (FCIM) DTC CHART
2009 Mercury Mariner Hybrid, AWD
Front Controls Interface Module (FCIM) DTC Chart
2009 Mercury Mariner Hybrid, AWDSECTION Front Controls Interface Module (FCIM) DTC Chart
DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| B1318 | Battery Voltage Low | GO to PINPOINT TEST AD . |
| B1342 | ECU is Faulted | CLEAR the DTCs. CARRY OUT the self-test. If DTC B1342 is retrieved again, INSTALL a new Front Controls Interface Module (FCIM). REFER to FRONT CONTROLS INTERFACE MODULE (FCIM) . TEST the system for normal operation. |
| B2924 | Audio Button Stuck | GO to PINPOINT TEST R . |
| U0140 | Lost Communication With Body Control Module (GEM) | GO to PINPOINT TEST AA . |
| U0184 | Lost Communication With Radio (ACM) | GO to PINPOINT TEST R . |
| U2050 | No Application Present | REFER to MODULE CONFIGURATION . |
| U2051 | One or More Calibration Files Missing/Corrupt | REFER to MODULE CONFIGURATION . |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.